Fangrui Product Details 1. Effect Pedal Specially Designed For Bass Guitar Application. 2. The Attack And Sense Functions Give It A Strong Compression, Transparent Tone And A Clear Articulate Sound Production. 3. This Versatile Bass Pedal Can Also Be Used To Give Extra Volume And Penetration When Required. 4. True Bypass, And With Led Light For Indicating Effects Or Bypass Status. Signal Input:1/4inch Monaural Jack Signal Output:1/4inch Monaural Jack Power Requirements:9v Dc Center Negative Current Consumption:50ma Weight:0.40kg Note:please Use The Power Adapter Whose Polarity Is Positive Pole Outside And Negative Pole Inside. Otherwise, The Product May Not Work Properly. Colour:as Shown Material:metal Size:11.9x9.4x3.8cm Package Contents: 1 * Guitar Pedal Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.